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<h1>src/qvgpukltflow/qvpyramid.cpp</h1><a href="qvpyramid_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> *      Copyright (C) 2011, 2012. PARP Research Group.</span>
<a name="l00003"></a>00003 <span class="comment"> *      &lt;http://perception.inf.um.es&gt;</span>
<a name="l00004"></a>00004 <span class="comment"> *      University of Murcia, Spain.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> *      This file is part of the QVision library.</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> *      QVision is free software: you can redistribute it and/or modify</span>
<a name="l00009"></a>00009 <span class="comment"> *      it under the terms of the GNU Lesser General Public License as</span>
<a name="l00010"></a>00010 <span class="comment"> *      published by the Free Software Foundation, version 3 of the License.</span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> *      QVision is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> *      but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00015"></a>00015 <span class="comment"> *      GNU Lesser General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> *      You should have received a copy of the GNU Lesser General Public</span>
<a name="l00018"></a>00018 <span class="comment"> *      License along with QVision. If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020 
<a name="l00024"></a>00024 
<a name="l00025"></a>00025 <span class="preprocessor">#include &lt;QVPyramid&gt;</span>
<a name="l00026"></a>00026 
<a name="l00027"></a>00027 QVPyramid::QVPyramid(){}
<a name="l00028"></a>00028 
<a name="l00029"></a>00029 QVPyramid::QVPyramid(<span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height, <span class="keywordtype">int</span> nLevels){
<a name="l00030"></a>00030 
<a name="l00031"></a>00031     this-&gt;width = width;
<a name="l00032"></a>00032     this-&gt;height = height;
<a name="l00033"></a>00033 
<a name="l00034"></a>00034     this-&gt;pyr = <span class="keyword">new</span> PyramidWithDerivativesCreator ();
<a name="l00035"></a>00035 
<a name="l00036"></a>00036     <span class="comment">//Allocate GPU memory:</span>
<a name="l00037"></a>00037     this-&gt;pyr-&gt;allocate(width, height, nLevels);
<a name="l00038"></a>00038 
<a name="l00039"></a>00039     <span class="comment">//Allocate CPU memory:</span>
<a name="l00040"></a>00040     this-&gt;pyr_images = <span class="keyword">new</span> <a class="code" href="classQVImage.html" title="Image representation class for the QVision.">QVImage&lt;sFloat,1&gt;</a> [nLevels];
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042 
<a name="l00043"></a>00043 <span class="keywordtype">void</span> QVPyramid::buildPyramid(<span class="keyword">const</span> <a class="code" href="classQVImage.html">QVImage&lt;uChar, 1&gt;</a> &amp;image) {
<a name="l00044"></a>00044     this-&gt;pyr-&gt;buildPyramidForGrayscaleImage(image.<a class="code" href="classQVImage.html#a200b9b19dbe2a79f75d603f9ecc67bf1" title="Method to obtain image data buffer, in read mode.">getReadData</a>());
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046 
<a name="l00047"></a>00047 <span class="keywordtype">void</span> QVPyramid::getFromGPU() {
<a name="l00048"></a>00048     <span class="keywordtype">int</span> textureWidth, textureHeight;
<a name="l00049"></a>00049 
<a name="l00050"></a>00050     <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i &lt; this-&gt;pyr-&gt;numberOfLevels(); i++){
<a name="l00051"></a>00051         this-&gt;pyr_images[i] = <a class="code" href="classQVImage.html" title="Image representation class for the QVision.">QVImage&lt;sFloat,1&gt;</a> (width &gt;&gt; i, height &gt;&gt; i);
<a name="l00052"></a>00052         <span class="comment">//Activa el nivel i de la pirámide</span>
<a name="l00053"></a>00053         this-&gt;pyr-&gt;activateTarget(i);
<a name="l00054"></a>00054         <span class="comment">//Se lee del buffer OpenGL</span>
<a name="l00055"></a>00055         glReadPixels(0,0, width &gt;&gt; i, height &gt;&gt; i, GL_RED, GL_FLOAT, pyr_images[i].getWriteData());
<a name="l00056"></a>00056     }
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058 
<a name="l00059"></a>00059 <a class="code" href="classQVImage.html" title="Image representation class for the QVision.">QVImage&lt;sFloat,1&gt;</a> QVPyramid::getImage(<span class="keywordtype">int</span> level)<span class="keyword"> const</span>{
<a name="l00060"></a>00060     <span class="keywordflow">return</span> this-&gt;pyr_images[level];
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062 
<a name="l00063"></a>00063 QVPyramid::~QVPyramid(){
<a name="l00064"></a>00064     this-&gt;pyr-&gt;deallocate();
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066 
<a name="l00067"></a>00067 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> QVPyramid::getID()<span class="keyword"> const</span>{
<a name="l00068"></a>00068     <span class="keywordflow">return</span> this-&gt;pyr-&gt;textureID();
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 
<a name="l00071"></a>00071 <span class="keywordtype">int</span> QVPyramid::getWidth ()<span class="keyword"> const</span>{
<a name="l00072"></a>00072     <span class="keywordflow">return</span> this-&gt;width;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 
<a name="l00075"></a>00075 <span class="keywordtype">int</span> QVPyramid::getHeight()<span class="keyword"> const</span>{
<a name="l00076"></a>00076     <span class="keywordflow">return</span> this-&gt;height;
<a name="l00077"></a>00077 }
</pre></div></div>
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